<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

  <style>
    div {
      margin-left: 100px;
      padding-left: 10px;
      height: 500px;
      width: 500px;
      border-left: 1px dashed;
    }
  </style>

</head>
<body>

<div>

</div>

</body>
</html>